Discriminating wavenumbers selection of ATR-FTIR spectra for identifying graded asphalt

Li, Zhihui; Zhou, Rui; Zhao, Yue; Cao, Qian; Qin, Weijun

doi:10.1016/j.conbuildmat.2019.04.068

Cited by 16 publications

(1 citation statement)

References 37 publications

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“…Hannah Tiernan applied ATR-FTIR spectroscopy to determining protein content and protein secondary structure composition [15]. Li Zhihui employed ATR-FTIR spectra coupling with SVM classifier to identify graded asphalt [16]. Xiting Sun proposed a rapid and expedient method to determine asphalt properties, including content, softening point, and penetration [17].…”

Section: Introductionmentioning

confidence: 99%

Rapid Identification and Quantitative Analysis of Polycarboxylate Superplasticizers Using ATR-FTIR Spectroscopy Combined with Chemometric Methods

Zhao³

et al. 2021

Mathematical Problems in Engineering

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Although the quality inspection method of polycarboxylate superplasticizers (PCE) based on macroperformance is still widely used, it has the drawbacks of time-consuming and low precision. This study aims to develop a practicable alternative method for quality inspection of PCE. For this, spectra collection, feature extraction, and cluster analysis were performed up on the PCE samples to demonstrate the feasibility of the method. Also, a new similarity calculation method was introduced in this work. Results show that the solid PCE sample for spectrum collection can be prepared using the simple heating method. High-quality spectra can be rapidly collected by infrared spectrometer combined with ATR accessory. Meanwhile, the accuracy of classification and clustering is high, suggesting that the feature extraction method based on principal component analysis (PCA) is effective. In addition, compared with conventional similarity calculation methods of cosine angle and correlation coefficient, the new similarity calculation method achieves better classification results and better generalization ability. This work provides a method of quantitative analysis and rapid identification of PCE for the construction site.

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Section: Introductionmentioning

confidence: 99%

Rapid Identification and Quantitative Analysis of Polycarboxylate Superplasticizers Using ATR-FTIR Spectroscopy Combined with Chemometric Methods

Zhao³

et al. 2021

Mathematical Problems in Engineering

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Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

et al. 2022

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Electrospinning is used to control the interface structure of macro‐polyacrylonitrile (PAN) fibers, and nano‐porous fibers (E‐PAN) which possess enhanced adhesion and interface effects. Herein, E‐PAN was prepared via electrospinning and was in turn incorporated into styrene‐butadiene‐styrene (SBS) asphalt to prepare PAN modified asphalt. The effect of E‐PAN addition on the performance of modified asphalt was explored. Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction, scanning electron microscopy, atomic force microscopy (AFM), and AFM tests confirmed that E‐PAN exhibited a highly rough nano‐porous skeleton without any prominent structural damage during the preparation process. The three major indexes, dynamic shearing rheometer, MSCR, rotational viscosity, and thermogravimetric analysis tests results showed that E‐PAN modified asphalt exhibited excellent viscoelasticity, anti‐rutting and anti‐fatigue properties and thermal stability (THRI of 192.7°C). FT‐IR test of the four components of modified asphalt confirmed that E‐PAN chemically crosslinked with the saturates and aromatics in the base asphalt and SBS, which resulted in a uniform and well‐developed network structure. In addition, Brauner‐Emmett‐Teller and fluorescence microscopy results confirmed that E‐PAN got fully swollen in a behavior similar to that of SBS in the base asphalt, and hence helped SBS to form an excellent network structure in asphalt. E‐PAN played the important role of stress buffer, mutual entanglement, and good thermal insulation inside the asphalt.

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Evaluation of the Performance of SMC Modified Asphalt Mixtures and Its Environmental Benefits Analysis

Luo

Qiu

2021

Lecture Notes in Civil Engineering

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Discriminating wavenumbers selection of ATR-FTIR spectra for identifying graded asphalt

Cited by 16 publications

References 37 publications

Rapid Identification and Quantitative Analysis of Polycarboxylate Superplasticizers Using ATR-FTIR Spectroscopy Combined with Chemometric Methods

Rapid Identification and Quantitative Analysis of Polycarboxylate Superplasticizers Using ATR-FTIR Spectroscopy Combined with Chemometric Methods

Electrospinning strategy for the preparation of nano‐porous fibers as modifier for inducing the network structure and enhancing mechanical properties of SBS‐modified asphalt

Evaluation of the Performance of SMC Modified Asphalt Mixtures and Its Environmental Benefits Analysis

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